From e4e9010207db1b94b2432ea3bf53443ce80312ab Mon Sep 17 00:00:00 2001
From: Pascal Birchler <swissspidy@git.wordpress.org>
Date: Wed, 9 Jan 2019 11:25:19 +0000
Subject: [PATCH] Upgrade/Install: Prevent possible JavaScript error when
 updating translations.

Props Presskopp.
Fixes #39189.


git-svn-id: https://develop.svn.wordpress.org/trunk@44513 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-admin/includes/class-wp-upgrader-skin.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/wp-admin/includes/class-wp-upgrader-skin.php b/src/wp-admin/includes/class-wp-upgrader-skin.php
index 27656aa2de..43055b2ae6 100644
--- a/src/wp-admin/includes/class-wp-upgrader-skin.php
+++ b/src/wp-admin/includes/class-wp-upgrader-skin.php
@@ -191,7 +191,7 @@ class WP_Upgrader_Skin {
 		} else {
 			echo '<script type="text/javascript">
 					(function( wp ) {
-						if ( wp && wp.updates.decrementCount ) {
+						if ( wp && wp.updates && wp.updates.decrementCount )
 							wp.updates.decrementCount( "' . $type . '" );
 						}
 					})( window.wp );